T835-8G-TR

Overview

The STMicroelectronics T835T-8G-TR is an 8A Snubberless Triac in a D2PAK surface-mount package. It features an 800V repetitive peak off-state voltage and an RMS on-state current of 8A. The device supports a maximum junction temperature of 150°C and operates within a -40°C to +125°C range. Key electrical parameters include a non-repetitive surge current of 80A/84A, a holding current max of 35mA, and a gate trigger current max of 35mA. It exhibits a low on-state voltage of 1.55V and minimal leakage current of 5µA.

Feature Summary

• Snubberless design eliminates the need for external RC snubber circuits under defined limits
• High static dV/dt immunity prevents false turn-on events
• Enhanced dynamic commutation performance improves turn-off reliability at high temperatures
• Three-quadrant triggering capability simplifies gate drive circuitry

Applications

• General purpose AC switching with high commutation requirements
• Phase angle control in light dimmers
• Induction motor starting circuits
• Heating regulation systems

Procurement Notes

Verify the exact part number against official STMicroelectronics documentation, as the input model 'T835-8G-TR' differs from the verified 'T835T-8G-TR'. Confirm RoHS compliance and MSL rating during sourcing. Ensure the supplier provides valid traceability data for the D2PAK package variant.

Selection Notes

Select this component for applications requiring high thermal stability up to 150°C junction temperature. The Snubberless feature reduces bill-of-materials cost by removing external components. Verify that the load current does not exceed the 8A RMS rating and that the voltage stress remains below 800V.

Part Context

This device belongs to the ST T-Series Triacs, specifically the Snubberless family designed for general-purpose AC switching. It complements other T835 variants like the T835T-8I (TO-220) and T835T-6I, offering a surface-mount alternative with similar high commutation capabilities and logic-level interface compatibility.

Replacement Considerations

Direct substitutes include the T835T-8G (non-tray version) or the T835T-8I for through-hole requirements. Cross-reference with other 8A 800V Snubberless Triacs from ST, ensuring identical D2PAK pinout and thermal characteristics are maintained.

FAQ

Does the T835T-8G-TR require an external snubber circuit?

No, it is a Snubberless Triac designed to operate without an external RC snubber circuit when operating within the specified limits.

What is the maximum junction temperature for this component?

The maximum junction temperature is 150°C, providing increased thermal margin compared to standard 125°C devices.

Is this triac suitable for inductive loads?

Yes, the Snubberless versions are specially recommended for inductive loads due to their high dynamic commutation performance.